Portable 3D scanner-MetraSCAN 3D for Design, Manufacturing and Analysis

数字制造在当今的制造业中变得更加流行。从三维计算机辅助设计模型到实体零件，数字化制造提供了一种降低制造成本的方法，在工时、减少材料废品率、良好的加工质量和工艺的重复性方面。另一方面，建立现有物理零件的三维虚拟模型对于验证、检验、质量控制、无损检测、产品开发和数值模拟(有限元分析/计算流体动力学)是非常重要的。该提案要求当地公司Creaform Inc.提供的便携式3D扫描仪MetraSCAN 3D来创建制造数据库，并获得可用格式的模型，例如三角面网格、一组NURBS曲面或CAD模型。与传统的三坐标测量机等其他方法相比，所请求的MetraSCAN没有任何严格的测量设置。它可以提供车间测量精度，对环境的不稳定具有很强的鲁棒性。它还可以提供快速的3D建模，并帮助工装和夹具开发。通过MetraSCAN，用户可以对零件进行有限元分析和数值模拟。所要求的3D扫描仪具有可扩展的测量体积、高速和可用的数据，可以轻松地、动态地扩展，而不会损失精度或传统的越级。因此，可以提高生产过程的灵活性和效率。测量精度达到0.020 mm，能够满足申请者科研项目的要求。该设备的研究成果将从芯棒设计、在线AFP纤维铺设、复合材料结构分析和复合材料损伤检测等方面推动复合材料结构制造技术的进步。取得重大进展的潜力是复合材料制造和其他航空航天机器人制造系统的数字制造技术开发，如钻探、铆接和去毛刺系统。

Digital manufacturing has become more popular in today's manufacturing industries. From 3D computer-aided design model to a physical part, digital manufacturing provides a way to reduce the manufacturing cost, in terms of labor hour, reduction in material scrap, good processing quality and repeatability of process. On the other hand, to create a 3D virtual model of an existing physical part is very important for validation, inspection, quality control, non-destructive testing, product development and numerical simulation (Finite Element Analysis / Computational Fluid Dynamics). This proposal requests a portable 3D scanner –MetraSCAN 3D from local company—Creaform Inc. to create a manufacturing database and obtain a model in a usable format such as a triangular-faced mesh, a set of NURBS surfaces or a CAD model. Compared to the other methods such as conventional CMM, the requested MetraSCAN is free of any rigid measurement setup. It can provide shop floor measurement accuracy that is robust to the instabilities of the environment. It can also provide fast 3D modeling and help tooling and jig development. With the MetraSCAN, the user can carry out finite element analysis and numerical simulation of the part. The requested 3D scanner has extendable measurement volume, high speed and usable data that can be easily and dynamically extended without loss in accuracy or conventional leapfrogs. Hence, it can improve the flexibility and efficiency of the production process. The measurement accuracy is up to 0.020mm, which can satisfy the requirement of the applicants' research projects. The results of the equipment will advance the manufacturing techniques of composite structure from mandrel design, on-line AFP fiber placement, and the analysis of composite structure and damage detection of the manufacturing composite. The potential for major advances is the digital manufacturing technology development for composite manufacturing and other aerospace robotic manufacturing systems such as drilling, riveting and deburring systems.